static tls_session *
tlsg_session_new ( tls_ctx * ctx, int is_server )
{
tlsg_ctx *c = (tlsg_ctx *)ctx;
tlsg_session *session;
session = ber_memcalloc ( 1, sizeof (*session) );
if ( !session )
return NULL;
session->ctx = c;
gnutls_init( &session->session, is_server ? GNUTLS_SERVER : GNUTLS_CLIENT );
gnutls_priority_set( session->session, c->prios );
if ( c->cred )
gnutls_credentials_set( session->session, GNUTLS_CRD_CERTIFICATE, c->cred );
if ( is_server ) {
int flag = 0;
if ( c->lo->ldo_tls_require_cert ) {
flag = GNUTLS_CERT_REQUEST;
if ( c->lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_DEMAND ||
c->lo->ldo_tls_require_cert == LDAP_OPT_X_TLS_HARD )
flag = GNUTLS_CERT_REQUIRE;
gnutls_certificate_server_set_request( session->session, flag );
}
}
return (tls_session *)session;
}
static krb5_error_code
LDAP__setmod(LDAPMod *** modlist, int modop, const char *attribute,
int *pIndex)
{
int cMods;
if (*modlist == NULL) {
*modlist = (LDAPMod **)ber_memcalloc(1, sizeof(LDAPMod *));
if (*modlist == NULL)
return ENOMEM;
}
for (cMods = 0; (*modlist)[cMods] != NULL; cMods++) {
if ((*modlist)[cMods]->mod_op == modop &&
strcasecmp((*modlist)[cMods]->mod_type, attribute) == 0) {
break;
}
}
*pIndex = cMods;
if ((*modlist)[cMods] == NULL) {
LDAPMod *mod;
*modlist = (LDAPMod **)ber_memrealloc(*modlist,
(cMods + 2) * sizeof(LDAPMod *));
if (*modlist == NULL)
return ENOMEM;
(*modlist)[cMods] = (LDAPMod *)ber_memalloc(sizeof(LDAPMod));
if ((*modlist)[cMods] == NULL)
return ENOMEM;
mod = (*modlist)[cMods];
mod->mod_op = modop;
mod->mod_type = ber_strdup(attribute);
if (mod->mod_type == NULL) {
ber_memfree(mod);
(*modlist)[cMods] = NULL;
return ENOMEM;
}
if (modop & LDAP_MOD_BVALUES) {
mod->mod_bvalues = NULL;
} else {
mod->mod_values = NULL;
}
(*modlist)[cMods + 1] = NULL;
}
return 0;
}
static int
alock_read_slot ( alock_info_t * info,
alock_slot_t * slot_data )
{
unsigned char slotbuf [ALOCK_SLOT_SIZE];
int res, size, size_total, err;
assert (info != NULL);
assert (slot_data != NULL);
assert (info->al_slot > 0);
res = lseek (info->al_fd,
(off_t) (ALOCK_SLOT_SIZE * info->al_slot),
SEEK_SET);
if (res == -1) return -1;
size_total = 0;
while (size_total < ALOCK_SLOT_SIZE) {
size = read (info->al_fd,
slotbuf + size_total,
ALOCK_SLOT_SIZE - size_total);
if (size == 0) return -1;
if (size < 0) {
err = errno;
if (err != EINTR && err != EAGAIN) return -1;
} else {
size_total += size;
}
}
if (alock_read_iattr (slotbuf) != ALOCK_MAGIC) {
return -1;
}
slot_data->al_lock = alock_read_iattr (slotbuf+8);
slot_data->al_stamp = alock_read_iattr (slotbuf+16);
slot_data->al_pid = alock_read_iattr (slotbuf+24);
if (slot_data->al_appname) ber_memfree (slot_data->al_appname);
slot_data->al_appname = ber_memcalloc (1, ALOCK_MAX_APPNAME);
if (slot_data->al_appname == NULL) {
return -1;
}
strncpy (slot_data->al_appname, (char *)slotbuf+32, ALOCK_MAX_APPNAME-1);
(slot_data->al_appname) [ALOCK_MAX_APPNAME-1] = '\0';
return 0;
}
static tls_ctx *
tlsg_ctx_new ( struct ldapoptions *lo )
{
tlsg_ctx *ctx;
ctx = ber_memcalloc ( 1, sizeof (*ctx) );
if ( ctx ) {
ctx->lo = lo;
if ( gnutls_certificate_allocate_credentials( &ctx->cred )) {
ber_memfree( ctx );
return NULL;
}
ctx->refcount = 1;
gnutls_priority_init( &ctx->prios, "NORMAL", NULL );
#ifdef LDAP_R_COMPILE
ldap_pvt_thread_mutex_init( &ctx->ref_mutex );
#endif
}
return (tls_ctx *)ctx;
}
static int
process_ldif_rec( char *rbuf, int linenum )
{
char *line, *dn, *newrdn, *newsup;
int rc, modop;
int expect_modop, expect_sep;
int deleteoldrdn;
int new_entry, delete_entry, got_all;
LDAPMod **pmods, *lm = NULL;
int version;
LDAPControl **pctrls;
int i, j, k, lines, idn, nmods;
struct berval *btype, *vals, **bvl, bv;
char *freeval;
unsigned char *mops = NULL;
new_entry = ldapadd;
rc = got_all = delete_entry = modop = expect_modop = 0;
expect_sep = 0;
version = 0;
deleteoldrdn = 1;
pmods = NULL;
pctrls = NULL;
dn = newrdn = newsup = NULL;
lines = ldif_countlines( rbuf );
btype = ber_memcalloc( 1, (lines+1)*2*sizeof(struct berval)+lines );
if ( !btype )
return LDAP_NO_MEMORY;
vals = btype+lines+1;
freeval = (char *)(vals+lines+1);
i = -1;
while ( rc == 0 && ( line = ldif_getline( &rbuf )) != NULL ) {
int freev;
if ( *line == '\n' || *line == '\0' ) {
break;
}
++i;
if ( line[0] == '-' && !line[1] ) {
BER_BVZERO( btype+i );
freeval[i] = 0;
continue;
}
if ( ( rc = ldif_parse_line2( line, btype+i, vals+i, &freev ) ) < 0 ) {
fprintf( stderr, _("%s: invalid format (line %d) entry: \"%s\"\n"),
prog, linenum+i, dn == NULL ? "" : dn );
rc = LDAP_PARAM_ERROR;
break;
}
freeval[i] = freev;
if ( dn == NULL ) {
if ( linenum+i == 1 && BV_CASEMATCH( btype+i, &BV_VERSION )) {
int v;
if( vals[i].bv_len == 0 || lutil_atoi( &v, vals[i].bv_val) != 0 || v != 1 ) {
fprintf( stderr,
_("%s: invalid version %s, line %d (ignored)\n"),
prog, vals[i].bv_val, linenum );
}
version++;
} else if ( BV_CASEMATCH( btype+i, &BV_DN )) {
dn = vals[i].bv_val;
idn = i;
}
/* skip all lines until we see "dn:" */
}
}
/* check to make sure there was a dn: line */
if ( !dn ) {
rc = 0;
goto leave;
}
lines = i+1;
if( lines == 0 ) {
rc = 0;
goto leave;
}
if( version && lines == 1 ) {
rc = 0;
goto leave;
}
i = idn+1;
/* Check for "control" tag after dn and before changetype. */
if ( BV_CASEMATCH( btype+i, &BV_CONTROL )) {
/* Parse and add it to the list of controls */
rc = parse_ldif_control( vals+i, &pctrls );
if (rc != 0) {
fprintf( stderr,
_("%s: Error processing %s line, line %d: %s\n"),
prog, BV_CONTROL.bv_val, linenum+i, ldap_err2string(rc) );
}
i++;
if ( i>= lines ) {
short_input:
fprintf( stderr,
_("%s: Expecting more input after %s line, line %d\n"),
prog, btype[i-1].bv_val, linenum+i );
rc = LDAP_PARAM_ERROR;
goto leave;
}
}
/* Check for changetype */
if ( BV_CASEMATCH( btype+i, &BV_CHANGETYPE )) {
#ifdef LIBERAL_CHANGETYPE_MODOP
/* trim trailing spaces (and log warning ...) */
int icnt;
for ( icnt = vals[i].bv_len; --icnt > 0; ) {
if ( !isspace( (unsigned char) vals[i].bv_val[icnt] ) ) {
break;
}
}
if ( ++icnt != vals[i].bv_len ) {
fprintf( stderr, _("%s: illegal trailing space after"
" \"%s: %s\" trimmed (line %d, entry \"%s\")\n"),
prog, BV_CHANGETYPE.bv_val, vals[i].bv_val, linenum+i, dn );
vals[i].bv_val[icnt] = '\0';
}
#endif /* LIBERAL_CHANGETYPE_MODOP */
if ( BV_CASEMATCH( vals+i, &BV_MODIFYCT )) {
new_entry = 0;
expect_modop = 1;
} else if ( BV_CASEMATCH( vals+i, &BV_ADDCT )) {
new_entry = 1;
modop = LDAP_MOD_ADD;
} else if ( BV_CASEMATCH( vals+i, &BV_MODRDNCT )
|| BV_CASEMATCH( vals+i, &BV_MODDNCT )
|| BV_CASEMATCH( vals+i, &BV_RENAMECT ))
{
i++;
if ( i >= lines )
goto short_input;
if ( !BV_CASEMATCH( btype+i, &BV_NEWRDN )) {
fprintf( stderr, _("%s: expecting \"%s:\" but saw"
" \"%s:\" (line %d, entry \"%s\")\n"),
prog, BV_NEWRDN.bv_val, btype[i].bv_val, linenum+i, dn );
rc = LDAP_PARAM_ERROR;
goto leave;
}
newrdn = vals[i].bv_val;
i++;
if ( i >= lines )
goto short_input;
if ( !BV_CASEMATCH( btype+i, &BV_DELETEOLDRDN )) {
fprintf( stderr, _("%s: expecting \"%s:\" but saw"
" \"%s:\" (line %d, entry \"%s\")\n"),
prog, BV_DELETEOLDRDN.bv_val, btype[i].bv_val, linenum+i, dn );
rc = LDAP_PARAM_ERROR;
goto leave;
}
deleteoldrdn = ( vals[i].bv_val[0] == '0' ) ? 0 : 1;
i++;
if ( i < lines ) {
if ( !BV_CASEMATCH( btype+i, &BV_NEWSUP )) {
fprintf( stderr, _("%s: expecting \"%s:\" but saw"
" \"%s:\" (line %d, entry \"%s\")\n"),
prog, BV_NEWSUP.bv_val, btype[i].bv_val, linenum+i, dn );
rc = LDAP_PARAM_ERROR;
goto leave;
}
newsup = vals[i].bv_val;
i++;
}
got_all = 1;
} else if ( BV_CASEMATCH( vals+i, &BV_DELETECT )) {
got_all = delete_entry = 1;
} else {
fprintf( stderr,
_("%s: unknown %s \"%s\" (line %d, entry \"%s\")\n"),
prog, BV_CHANGETYPE.bv_val, vals[i].bv_val, linenum+i, dn );
rc = LDAP_PARAM_ERROR;
goto leave;
}
i++;
} else if ( ldapadd ) { /* missing changetype => add */
new_entry = 1;
modop = LDAP_MOD_ADD;
} else {
expect_modop = 1; /* missing changetype => modify */
}
if ( got_all ) {
if ( i < lines ) {
fprintf( stderr,
_("%s: extra lines at end (line %d, entry \"%s\")\n"),
prog, linenum+i, dn );
rc = LDAP_PARAM_ERROR;
goto leave;
}
goto doit;
}
nmods = lines - i;
idn = i;
if ( new_entry ) {
int fv;
/* Make sure all attributes with multiple values are contiguous */
for (; i<lines; i++) {
for (j=i+1; j<lines; j++) {
if ( BV_CASEMATCH( btype+i, btype+j )) {
nmods--;
/* out of order, move intervening attributes down */
if ( j != i+1 ) {
bv = vals[j];
fv = freeval[j];
for (k=j; k>i; k--) {
btype[k] = btype[k-1];
vals[k] = vals[k-1];
freeval[k] = freeval[k-1];
}
k++;
btype[k] = btype[i];
vals[k] = bv;
freeval[k] = fv;
}
i++;
}
}
}
/* Allocate space for array of mods, array of pointers to mods,
* and array of pointers to values, allowing for NULL terminators
* for the pointer arrays...
*/
lm = ber_memalloc( nmods * sizeof(LDAPMod) +
(nmods+1) * sizeof(LDAPMod*) +
(lines + nmods - idn) * sizeof(struct berval *));
pmods = (LDAPMod **)(lm+nmods);
bvl = (struct berval **)(pmods+nmods+1);
j = 0;
k = -1;
BER_BVZERO(&bv);
for (i=idn; i<lines; i++) {
if ( BV_CASEMATCH( btype+i, &BV_DN )) {
fprintf( stderr, _("%s: attributeDescription \"%s\":"
" (possible missing newline"
" after line %d, entry \"%s\"?)\n"),
prog, btype[i].bv_val, linenum+i - 1, dn );
}
if ( !BV_CASEMATCH( btype+i, &bv )) {
bvl[k++] = NULL;
bv = btype[i];
lm[j].mod_op = LDAP_MOD_ADD | LDAP_MOD_BVALUES;
lm[j].mod_type = bv.bv_val;
lm[j].mod_bvalues = bvl+k;
pmods[j] = lm+j;
j++;
}
bvl[k++] = vals+i;
}
bvl[k] = NULL;
pmods[j] = NULL;
goto doit;
}
mops = ber_memalloc( lines+1 );
mops[lines] = M_SEP;
mops[i-1] = M_SEP;
for ( ; i<lines; i++ ) {
if ( expect_modop ) {
#ifdef LIBERAL_CHANGETYPE_MODOP
/* trim trailing spaces (and log warning ...) */
int icnt;
for ( icnt = vals[i].bv_len; --icnt > 0; ) {
if ( !isspace( (unsigned char) vals[i].bv_val[icnt] ) ) break;
}
if ( ++icnt != vals[i].bv_len ) {
fprintf( stderr, _("%s: illegal trailing space after"
" \"%s: %s\" trimmed (line %d, entry \"%s\")\n"),
prog, type, vals[i].bv_val, linenum+i, dn );
vals[i].bv_val[icnt] = '\0';
}
#endif /* LIBERAL_CHANGETYPE_MODOP */
expect_modop = 0;
expect_sep = 1;
if ( BV_CASEMATCH( btype+i, &BV_MODOPADD )) {
modop = LDAP_MOD_ADD;
mops[i] = M_SEP;
nmods--;
} else if ( BV_CASEMATCH( btype+i, &BV_MODOPREPLACE )) {
/* defer handling these since they might have no values.
* Use the BVALUES flag to signal that these were
* deferred. If values are provided later, this
* flag will be switched off.
*/
modop = LDAP_MOD_REPLACE;
mops[i] = modop | LDAP_MOD_BVALUES;
btype[i] = vals[i];
} else if ( BV_CASEMATCH( btype+i, &BV_MODOPDELETE )) {
modop = LDAP_MOD_DELETE;
mops[i] = modop | LDAP_MOD_BVALUES;
btype[i] = vals[i];
} else if ( BV_CASEMATCH( btype+i, &BV_MODOPINCREMENT )) {
modop = LDAP_MOD_INCREMENT;
mops[i] = M_SEP;
nmods--;
} else { /* no modify op: invalid LDIF */
fprintf( stderr, _("%s: modify operation type is missing at"
" line %d, entry \"%s\"\n"),
prog, linenum+i, dn );
rc = LDAP_PARAM_ERROR;
goto leave;
}
bv = vals[i];
} else if ( expect_sep && BER_BVISEMPTY( btype+i )) {
mops[i] = M_SEP;
expect_sep = 0;
expect_modop = 1;
nmods--;
} else {
if ( !BV_CASEMATCH( btype+i, &bv )) {
fprintf( stderr, _("%s: wrong attributeType at"
" line %d, entry \"%s\"\n"),
prog, linenum+i, dn );
rc = LDAP_PARAM_ERROR;
goto leave;
}
mops[i] = modop;
/* If prev op was deferred and matches this type,
* clear the flag
*/
if ( (mops[i-1] & LDAP_MOD_BVALUES)
&& BV_CASEMATCH( btype+i, btype+i-1 ))
{
mops[i-1] = M_SEP;
nmods--;
}
}
}
#if 0 /* we should faithfully encode the LDIF, not combine */
/* Make sure all modops with multiple values are contiguous */
for (i=idn; i<lines; i++) {
if ( mops[i] == M_SEP )
continue;
for (j=i+1; j<lines; j++) {
if ( mops[j] == M_SEP || mops[i] != mops[j] )
continue;
if ( BV_CASEMATCH( btype+i, btype+j )) {
nmods--;
/* out of order, move intervening attributes down */
if ( j != i+1 ) {
int c;
struct berval bv;
char fv;
c = mops[j];
bv = vals[j];
fv = freeval[j];
for (k=j; k>i; k--) {
btype[k] = btype[k-1];
vals[k] = vals[k-1];
freeval[k] = freeval[k-1];
mops[k] = mops[k-1];
}
k++;
btype[k] = btype[i];
vals[k] = bv;
freeval[k] = fv;
mops[k] = c;
}
i++;
}
}
}
#endif
/* Allocate space for array of mods, array of pointers to mods,
* and array of pointers to values, allowing for NULL terminators
* for the pointer arrays...
*/
lm = ber_memalloc( nmods * sizeof(LDAPMod) +
(nmods+1) * sizeof(LDAPMod*) +
(lines + nmods - idn) * sizeof(struct berval *));
pmods = (LDAPMod **)(lm+nmods);
bvl = (struct berval **)(pmods+nmods+1);
j = 0;
k = -1;
BER_BVZERO(&bv);
mops[idn-1] = M_SEP;
for (i=idn; i<lines; i++) {
if ( mops[i] == M_SEP )
continue;
if ( mops[i] != mops[i-1] || !BV_CASEMATCH( btype+i, &bv )) {
bvl[k++] = NULL;
bv = btype[i];
lm[j].mod_op = mops[i] | LDAP_MOD_BVALUES;
lm[j].mod_type = bv.bv_val;
if ( mops[i] & LDAP_MOD_BVALUES ) {
lm[j].mod_bvalues = NULL;
} else {
lm[j].mod_bvalues = bvl+k;
}
pmods[j] = lm+j;
j++;
}
bvl[k++] = vals+i;
}
bvl[k] = NULL;
pmods[j] = NULL;
doit:
/* If default controls are set (as with -M option) and controls are
specified in the LDIF file, we must add the default controls to
the list of controls sent with the ldap operation.
*/
if ( rc == 0 ) {
if (pctrls) {
LDAPControl **defctrls = NULL; /* Default server controls */
LDAPControl **newctrls = NULL;
ldap_get_option(ld, LDAP_OPT_SERVER_CONTROLS, &defctrls);
if (defctrls) {
int npc=0; /* Num of LDIF controls */
int ndefc=0; /* Num of default controls */
while (pctrls[npc]) npc++; /* Count LDIF controls */
while (defctrls[ndefc]) ndefc++; /* Count default controls */
newctrls = ber_memrealloc(pctrls,
(npc+ndefc+1)*sizeof(LDAPControl*));
if (newctrls == NULL) {
rc = LDAP_NO_MEMORY;
} else {
int i;
pctrls = newctrls;
for (i=npc; i<npc+ndefc; i++) {
pctrls[i] = ldap_control_dup(defctrls[i-npc]);
if (pctrls[i] == NULL) {
rc = LDAP_NO_MEMORY;
break;
}
}
pctrls[npc+ndefc] = NULL;
}
ldap_controls_free(defctrls); /* Must be freed by library */
}
}
}
if ( rc == 0 ) {
if ( delete_entry ) {
rc = dodelete( dn, pctrls );
} else if ( newrdn != NULL ) {
rc = dorename( dn, newrdn, newsup, deleteoldrdn, pctrls );
} else {
rc = domodify( dn, pmods, pctrls, new_entry );
}
if ( rc == LDAP_SUCCESS ) {
rc = 0;
}
}
leave:
if (pctrls != NULL) {
ldap_controls_free( pctrls );
}
if ( lm != NULL ) {
ber_memfree( lm );
}
if ( mops != NULL ) {
ber_memfree( mops );
}
for (i=lines-1; i>=0; i--)
if ( freeval[i] ) ber_memfree( vals[i].bv_val );
ber_memfree( btype );
return( rc );
}
static int read_config_file ()
{
FILE * config;
char * line;
int returnValue = -1;
line = ber_memcalloc(260, sizeof(char));
if ( line == NULL ) {
return returnValue;
}
if ( (config = fopen(CONFIG_FILE, "r")) == NULL) {
#if defined(DEBUG)
syslog(LOG_ERR, "check_password: Opening file %s failed", CONFIG_FILE);
#endif
#if defined(LDEBUG)
printf("check_password: Opening file %s failed\n", CONFIG_FILE);
#endif
ber_memfree(line);
return returnValue;
}
returnValue = 0;
while (fgets(line, 256, config) != NULL) {
char *start = line;
char *word, *value;
validator dealer;
#if defined(DEBUG)
/* Debug traces to syslog. */
syslog(LOG_NOTICE, "check_password: Got line |%s|", line);
#endif
#if defined(LDEBUG)
/* Debug traces. */
char* msg = chomp(line);
printf("check_password: Got line |%s|\n", msg);
ber_memfree(msg);
#endif
while (isspace(*start) && isascii(*start)) start++;
/* If we've got punctuation, just skip the line. */
if ( ispunct(*start)) {
#if defined(DEBUG)
/* Debug traces to syslog. */
syslog(LOG_NOTICE, "check_password: Skipped line |%s|", line);
#endif
#if defined(LDEBUG)
/* Debug traces. */
char* msg = chomp(line);
printf("check_password: Skipped line |%s|\n", msg);
ber_memfree(msg);
#endif
continue;
}
if( isascii(*start)) {
struct config_entry* centry = config_entries;
int i = 0;
char* keyWord = centry[i].key;
if ((word = strtok(start, " \t")) && (value = strtok(NULL, " \t"))) {
while ( keyWord != NULL ) {
if ((strncmp(keyWord,word,strlen(keyWord)) == 0) && (dealer = valid_word(word)) ) {
#if defined(DEBUG)
syslog(LOG_NOTICE, "check_password: Word = %s, value = %s", word, value);
#endif
#if defined(LDEBUG)
printf("check_password: Word = %s, value = %s\n", word, value);
#endif
centry[i].value = chomp(value);
break;
}
i++;
keyWord = centry[i].key;
}
}
}
}
fclose(config);
ber_memfree(line);
return returnValue;
}
int
alock_open ( alock_info_t * info,
const char * appname,
const char * envdir,
int locktype )
{
struct stat statbuf;
alock_info_t scan_info;
alock_slot_t slot_data;
char * filename;
int res, max_slot;
int dirty_count, live_count, nosave;
char *ptr;
assert (info != NULL);
assert (appname != NULL);
assert (envdir != NULL);
assert ((locktype & ALOCK_SMASK) >= 1 && (locktype & ALOCK_SMASK) <= 2);
slot_data.al_lock = locktype;
slot_data.al_stamp = time(NULL);
slot_data.al_pid = getpid();
slot_data.al_appname = ber_memcalloc (1, ALOCK_MAX_APPNAME);
if (slot_data.al_appname == NULL) {
return ALOCK_UNSTABLE;
}
strncpy (slot_data.al_appname, appname, ALOCK_MAX_APPNAME-1);
slot_data.al_appname [ALOCK_MAX_APPNAME-1] = '\0';
filename = ber_memcalloc (1, strlen (envdir) + strlen ("/alock") + 1);
if (filename == NULL ) {
ber_memfree (slot_data.al_appname);
return ALOCK_UNSTABLE;
}
ptr = lutil_strcopy(filename, envdir);
lutil_strcopy(ptr, "/alock");
#ifdef _WIN32
{ HANDLE handle = CreateFile (filename, GENERIC_READ|GENERIC_WRITE,
FILE_SHARE_READ|FILE_SHARE_WRITE, NULL, OPEN_ALWAYS,
FILE_ATTRIBUTE_NORMAL, NULL);
info->al_fd = _open_osfhandle (handle, 0);
}
#else
info->al_fd = open (filename, O_CREAT|O_RDWR, 0666);
#endif
ber_memfree (filename);
if (info->al_fd < 0) {
ber_memfree (slot_data.al_appname);
return ALOCK_UNSTABLE;
}
info->al_slot = 0;
res = alock_grab_lock (info->al_fd, 0);
if (res == -1) {
close (info->al_fd);
ber_memfree (slot_data.al_appname);
return ALOCK_UNSTABLE;
}
res = fstat (info->al_fd, &statbuf);
if (res == -1) {
close (info->al_fd);
ber_memfree (slot_data.al_appname);
return ALOCK_UNSTABLE;
}
max_slot = (statbuf.st_size + ALOCK_SLOT_SIZE - 1) / ALOCK_SLOT_SIZE;
dirty_count = 0;
live_count = 0;
nosave = 0;
scan_info.al_fd = info->al_fd;
for (scan_info.al_slot = 1;
scan_info.al_slot < max_slot;
++ scan_info.al_slot) {
if (scan_info.al_slot != info->al_slot) {
res = alock_query_slot (&scan_info);
if (res & ALOCK_NOSAVE) {
nosave = ALOCK_NOSAVE;
res ^= ALOCK_NOSAVE;
}
if (res == ALOCK_UNLOCKED
&& info->al_slot == 0) {
info->al_slot = scan_info.al_slot;
} else if (res == ALOCK_LOCKED) {
++live_count;
} else if (res == ALOCK_UNIQUE
&& (( locktype & ALOCK_SMASK ) == ALOCK_UNIQUE
|| nosave )) {
close (info->al_fd);
ber_memfree (slot_data.al_appname);
return ALOCK_BUSY;
} else if (res == ALOCK_DIRTY) {
++dirty_count;
} else if (res == -1) {
close (info->al_fd);
ber_memfree (slot_data.al_appname);
return ALOCK_UNSTABLE;
}
}
}
if (dirty_count && live_count) {
close (info->al_fd);
ber_memfree (slot_data.al_appname);
return ALOCK_UNSTABLE;
}
if (info->al_slot == 0) info->al_slot = max_slot + 1;
res = alock_grab_lock (info->al_fd,
info->al_slot);
if (res == -1) {
close (info->al_fd);
ber_memfree (slot_data.al_appname);
return ALOCK_UNSTABLE;
}
res = alock_write_slot (info, &slot_data);
ber_memfree (slot_data.al_appname);
if (res == -1) {
close (info->al_fd);
return ALOCK_UNSTABLE;
}
alock_share_lock (info->al_fd, info->al_slot);
res = alock_release_lock (info->al_fd, 0);
if (res == -1) {
close (info->al_fd);
return ALOCK_UNSTABLE;
}
if (dirty_count) return ALOCK_RECOVER | nosave;
return ALOCK_CLEAN | nosave;
}
